Commit 057c0969 authored by Jan Kara's avatar Jan Kara Committed by Luis Henriques

ext4: fix oops when loading block bitmap failed

commit 599a9b77 upstream.

When we fail to load block bitmap in __ext4_new_inode() we will
dereference NULL pointer in ext4_journal_get_write_access(). So check
for error from ext4_read_block_bitmap().

Coverity-id: 989065
Signed-off-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
parent cbe9a253
......@@ -887,6 +887,10 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
struct buffer_head *block_bitmap_bh;
block_bitmap_bh = ext4_read_block_bitmap(sb, group);
if (!block_bitmap_bh) {
err = -EIO;
goto out;
}
BUFFER_TRACE(block_bitmap_bh, "get block bitmap access");
err = ext4_journal_get_write_access(handle, block_bitmap_bh);
if (err) {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment